Type-writing machine



No. 6|6,023. Patented Dec. I3, I898.

E. S. SHIMEB.

TYPE WRITING MACHINE.

(Applicatinn filed May 17, 189B.)

(No Model.)

2 Sheets-Sheet THE NORRIS PETERS co., vnoTo-uwoh WASHINGTON, a c.

No. 6I6,023. Patented Dec; I3, H598.

E. S. SHIMER.

TYPE WRITING MACHINE.

" (Application filed Kay 17, 1898.) (No Model.)

2 Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE.

ELMER S. SHIMER, OF MILTON, PENNSYLVANIA.

TYPE-WRITING MACHINE.

SPECIFICA ms forming part of Letters Patent No. 616,023, dated December13', 1898. 7 Application filed May 17,1898. Serial No- 680,982. (Nomodel.) I

To all whom it may concern:

Beit known that I, ELMER S. SHIMER, a citi- Zen of the United States,residing at Milton, in the county of Northumberland and State ofPennsylvania, have invented new and use ful Improvements in TypeWVritingMachines, of which the following is a specification.

My invention relates to type-writing machines; and its object is toprovide an improved ribbon-feeding mechanism whereby the ribbon isintermittently fed by the forward movement of the paper-carriage, so asto present a new surface to the types as they are successively actuated.

The invention consists in the novel construction and combination ofparts hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a longitudinal sectional viewof a type-writing machine constructed in accordance with my invention,taken on the line a: :20, Fig. 2. Fig. 2 is an end View looking from theleft, showing so much of the machine as is necessary to illustrate theinvention. Fig. 3 is a similar view looking from the opposite end. Fig.4: is a transverse section on the line y y, Fig. 1. Fig. 5 is a detailView.

In the said drawings the reference-nu meral 1 designates the frame ofthe machine, mounted on the base 2, and 3 the type-basket, which ismovable forwardly to change from small letters to capitals by means ofmechanism disclosed in Letters Patent granted to me June 30, 1896, No.563,080, but which forms no part of the present invention.

The numeral 5 designates the type-bars,

and 6 the sliding carriage which carries the paper-cylinder 7.

The numerals 8 and 9 designate rotatable ribbon-spool shafts at oppositeends of the machine, provided with cranks 10 at the front ends. Theshaft 9 extends across the frame of the machine and is journaled in theupright portions 12 of the frame. Shaft 8 does not extend to the rearupright of the frame, but is provided near said upright with aratchet-wheel 13, for a purpose hereinafter described, formed with asocket 14.

The numeral 15 designates a stud-shaft which fits in the socket l4 andserves as a journal for the shaft 8. The outer end of this shaft 15 isjournaled in the said rear up- I right and has a reduced portion 15*,the outer end of which is screw-threaded. Fixed to the inner end of thisreduced portion is a ratchet-wheel 17, with which engages a pawl 18,pivoted to said upright for preventing backward movement of the shaft15. Engaging with the screw-threaded end of said reduced portion is amille'd nut 16. A washer 16 is interposed between said nut andratchetwheel. Loosely mounted on said stud-shaft is aspring-barrel19,00nnected with the papercarriage by means of a strap 20and by means of which said carriage is fed forward. Located in thisbarrel is a spring 21, one end of which is connected therewith, whilethe other end is secured to the stud-shaft 15. The said nut 16 is aright-handed one, and, by turning it to the right the shaft 15 will beturned, whereby the tension of the spring will be increased, the ratchetand pawl preventing backward movement of the shaft. By releasing thepawl the shaft will be turned backward, decreasing the tension of thespring. Upon its inner face said barrel is provided with a pin-gearconsisting of a number of pins or projections arranged in a circle andengaging with a cogged segment 23 at the upper end of an arm 24:,pivoted to lug 25 on the base 2. Pivoted to the outer end of saidsegment is an inwardly-extending curved rack bar or segment 26, which isadapted to engage with the ratchet-wheel 13. A coiled spring 27 isconnected with said rack bar or segment for holding it in engagementwith the ratchet-wheel when in use. When this segment or' rack-bar isnot in use, it is held out of engagement withthe ratchet-wheel 13 by aspring-catch 28, secured to the arm 2 1. At the opposite end or side ofthe machine there is an arm 24, pivoted to lugs 25 and provided with asegment 29, to which is pivoted a rack bar or segment 26, which engageswith a ratchet-wheel 13 on the shaft 9. This ratchet-wheel is formedwith a peripheral groove 29, which serves as a guide for the segment 29.Said arm is also provided with a spring-catch 28 anda coiled spring 27.A bar 30 connects the arms 24: and 2 1 with each other, so that theywill move in unison.

The spring-catches 2S and 295 consist of short pieces of spring metal,the lower ends of which are secured to the pivoted arm 24 and 24. Theupper ends of these catches are bent upwardly and outwardly, so thatwhen the segments 26 and 26 are turned down out of engagement with theratchet-wheels said bent portions of the catches will clamp them againstthe pivoted arms and hold them in such position.

The numeral 31 designates the ribbonspools, comprising the hubs 32 andend flanges 34. These hubs are mounted on the shafts 8 and 9 and areprovided with projections 35, which engage with longitudinal slots 36 inthe shafts, so that while they will rotate with the shafts they can alsobe moved laterally thereon. At each end of the machine is aribbonshifter, comprising end plates 88, through which the shafts S and9 pass, a connectingplate 39, and lugs 40, to which is journaled aroller 41, over which the ribbon passes. The said connecting-plate isprovided with a projection 42, which engages with a hole or slot in avertical arm 43. The lower ends of these arms are secured to a shaft 44,which is journaled in bearings 45, secured to the base 2. This shaftextends transversely across the machine, and its purpose is that whenone of the ribbon-shifters is operated the other will move in unisontherewith, the arms 46 being rigidly secured thereto.

The operation is as follows: Supposing the ribbon is to be fed from thespool at the right of the machine to the spool at the left, then thesegment or rack-bar 26 is thrown out of engagement with theratchet-wheel 13 and is held in place by the catch 28, while the segment26 is held in engagement with ratchet- Wheel 13 by its coiled spring. Asthe papercarriage is now fed forward step by step by the spring-barrelby the depression of the keys the pin-gear on the springbarrel willengage with the cog-segment 23, causing the pivoted arm with which it isconnected to be moved inward. The rack bar or segment 26 will also bemoved inward, which, meshing with the ratchet-wheel 13, willintermittently rotate the latter, the shaft 8 and the ribbonspoolthereon winding the ribbon on the spool, so that the ribbon will presenta new surface to the successively-actuated type. To reverse the movementof the ribbon, the segment 26 is disengaged from the ratchet-Wheel l3and segment 26 engaged with ratchet-wheel 13, when shaft 9 and its spoolwill be rotated through the mediu m of the bar connecting the arms 24and 24. To shift the ribbon laterally, one of the shifters on the shaft8 or 9, as the case may be, is moved back or forth, which will move theribbon-spools laterally on the shafts.

Having thus fully described my invention, what I claim is 1. In aribbon-feeding mechanism for typewriting machines, the combination withthe ribbon-spool shaft, the ratchet-wheel secured thereto, thestud-shaft, the spring-barrel journaled thereon, and the gear on saidspringbarrel, of the pivoted arm, the cog-segment at the upper endthereof,and the rack-segment pivoted thereto meshing with saidratchetwheel, substantially as described.

2. In a ribbon-feeding mechanism for typewriting machines, thecombination with a ribbon-spool shaft, the ratchet-wheel secured theretoformed with a socket, the stud-shaft engaging with said socket, thespring-barrel loosely mounted on said stud-shaft and connected with thepaper-carriage, and the gear connected with said spring-barrel, of thepivoted arm, the cog-segment at the upper end thereof meshing with thegear of the springbarrel,and the ratchet-segment pivoted to saidcog-segment and engaging with the ratchetwheel of the spool-shaft,substantially as described.

3. In a ribbon-feeding mechanism for typewriting machines, thecombination with the ribbon-spool shaft, the ratchet-Wheel securedthereto formed with a socket, the stud-shaft engaging therewith, thespring-barrel loosely mounted on said stud-shaft and connected with thepaper-carriage and the gear on said spring-barrel, of the pivoted armprovided with a cog segment at the upper end, the racksegment pivotedthereto, the coiled spring and the spring-catch on said arm,substantially as described.

4. In a ribbon-feeding mechanism for type writing machines, thecombination with the ribbon-spool shaft, the ratchet-wheel securedthereto formed with a socket, the stud-shaft engaging with said socket,the spring-barrel journaled on said stud-shaft and provided with apin-gear, the spring located in and secured to said barrel and alsosecured to the stud-shaft, the ratchet-wheel on said studshaft and thepivoted pawl engaging there'- with, of the pivoted arm, the cog-segmentat the upper end thereof, the rack-segment pivoted thereto, the coiledspring and the spring catch, substantially as described.

5. In a ribbon-feeding mechanism for typewriting machines, thecombination with the ribbon-spool shafts, the ratchet-wheel secured toone of said shafts,the stud-shaft,the springbarrel journaled on saidstud-shaft, the gear connected therewith, the pivoted arm, thecogsegment at the upper end thereof and the rack segment pivotedthereto,- of the pivoted arm at the opposite end of the machine, thepivoted rack-segment at the upper end thereof, the ratchet-wheel securedto the other ribbonspool shaft and the bar connecting said piv otedarms, substantially as described.

6. In a ribbon-feeding mechanism for typewriting machines, thecombination with the ribbon-spool shaft at one end of the machine, theratchet-Wheel secured thereto, the studshaft, the spring-barreljournaled thereon, the gear on said spring-barrel, the pivoted arm, thecog-segment at the upper end thereof, and the rack-segment pivotedthereto, of the pivoted arm at the opposite end of the machine, the barconnecting said arms, the

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pivoted rack-segment, the ribbon-spool shaft, the ratchet-wheel securedthereto provided with a peripheral guide-groove and the segment workingtherein, substantially as described.

7. In a ribbon-feedin g mechanism'for type- Writing machines, thecombination with the ribbon-spool shaft at one end of the machine, theratchet-wheel secured thereto formed with a socket, the stud-shaftengaging with said socket, the spring-barrel on said stud-shaft, thegear connected therewith, the pivoted arm provided with a cog-segment,the ratchet-segment pivoted thereto,'the coiled spring and thespring-catch, of the ribbon-spool shaft at the opposite end of themachine, the ratchet- Wheel secured thereto, and formed with aperipheral guide-groove, the pivoted arm havin g a segment engaging withsaid groove, the rack segment pivoted thereto, the coiled spring andspring-catch connected with said pivoted arm and the bar connecting saidpivoted arms, substantially as described.

8. In a ribbon-feeding mechanism for typewriting machines, thecombination with the ribbon spool, the shaft thereof, and theratchet-Wheel secured to said shaft, of the spring-barrel, the pivotedarm, the rack-segment pivoted thereto and engaging with saidratchetwheel, and means carried by the springbarrel 'for operating thesaid pivoted arm, substantially as described.

9. In a ribbon-feeding mechanism for typewriting machines, thecombination with the ribbon-spool shaft at one end of the machine, andthe ratchet-Wheel secured thereto formed with a groove, the pivoted armprovided with a segment engaging with said groove, and the rack-segmentpivoted thereto, engaging with said ratchet-Wheel, and means foroperating said arm and segment, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit= nesses.

ELMER 'S. SHIMERs Witnesses:

W. H. BECK, O. F. BALLIE'I.

